Maintaining a subtle balance between conservative and precise solutions in the aerospace static concession processes
Journal Title: Proceedings in Manufacturing Systems - Year 2019, Vol 14, Issue 1
Abstract
The Static Stress represents a main task of the aerospace concessions workflow that is used to address the impact of manufacturing non-conformities on local and global criteria. The process benefits from conservatism, being most of the times a fast way to prove that a non-conformal part can withstand damage. Even so, critically loaded components are already subject to conservative assumptions that are applied in the certification stage. As a consequence, the results achieved are unrealistic, lowering the amount of conservatism demanding for extra time and economic resources. To cope with these aspects, an approach is proposed involving the use of parametric finite element method models for studying the variation of mechanical stresses due to possible non-conformity thresholds. Knock Down Factor charts are developed based on the effect of load redistribution. The approach can successfully be re-used for similar types of non-conformities. The given concepts are proved by means of practical examples throughout the work.
Authors and Affiliations
Tudor George ALEXANDRU, Mircea Gabriel BURTOIU, Robert RUSU
Keywords
Related Articles
- EP ID EP586897
- DOI -
- Views 83
- Downloads 0
Architecture of the RFID systems used in production systems
This paper presents a case study which points out the way the radio frequency identification RFID systems are integrated into automated production flows from an information flow viewpoint. For the experimental research,...
Dynamic assessment of retrofitted NC lathe used for reshaping wheelsets
The paper presents the requirements and achievements in a frame of a research project for the retrofitting of a lathe in order to optimize the reshaping on CNC machine tools and increase the traffic safety. It presents t...
Cloud based cutting tool load monitoring and control system
This paper presents a cloud based cutting tool load monitoring and control system for machining of functionally graded metal materials. This is a cutting tool load control system which connects the computing and service...
TOWARDS PRODUCTION OF MICROFEATURES ON A CUSTOM-MADE STEREOLITOGRAPHIC DLP PRINTER
Stereolithographic digital light processing (DLP) printing is a liquid-based additive manufacturing process, where 3D parts are made by curing a photosensitive polymer kept in vat. In this paper, the in-house DLP printer...
System for documents securing and intelligent management
The use of the RFID technology in all engineering-specific areas is no longer a novelty, this technology being employed today for documents securing and management. This paper presents an integrated system of documents s...